Darrel Jay Walker

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Mt. Pleasant, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Refrigeration system capable of multi-faceted operation
- Patent number 7,748,228
- Issue date Jul 6, 2010
- THE DELFIELD COMPANY, LLC
- Darrel Jay Walker
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method and apparatus for controlling heat transfer for a fluid imme...
- Patent number 7,069,732
- Issue date Jul 4, 2006
- The Delfield Company
- Darrel J. Walker
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Apparatus and method for controlling temperature for a self-service...
- Patent number 6,467,294
- Issue date Oct 22, 2002
- The Delfield Company
- Darrel Jay Walker
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for controlling temperature of a freeze plate
- Publication number 20080053111
- Publication date Mar 6, 2008
- THE DELFIELD COMPANY LLC.
- Darrel Jay Walker
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Application
Refrigeration system capable of multi-faceted operation
- Publication number 20070180849
- Publication date Aug 9, 2007
- THE DELFIELD COMPANY, LLC
- Darrel Jay Walker
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Method and apparatus for controlling heat transfer for a fluid imme...
- Publication number 20050284172
- Publication date Dec 29, 2005
- THE DELFIELD COMPANY
- Darrel J. Walker
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
APPARATUS AND METHOD FOR CONTROLLING TEMPERATURE FOR A SELF-SERVICE...
- Publication number 20020162347
- Publication date Nov 7, 2002
- Darrel Jay Walker
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...